Returning back to a tapped VP44

[Mopar1973Man]

My warranty should be over or nearly over for my VP44. Time to return back to wire tap tuning again.

 

There is a reason why I'm not re-using my old Stealth Plate. I'll show you the difference in my next post. I bought my first Stealth Plate back in 2007 that is 10 years ago and several updates have been done to the old original plate I bought 10 years ago.

Edited March 25, 2018 by Mopar1973Man

[Mopar1973Man]

Ok here is the difference between the 10 year old plate and the new plate. The new plate has a nut to back up the jam nut on top. That was an issue with my old plate if I was to over tighten the jam nut it would pull the tap screw out of the plastic. 

 

 

Now installing...

 

You need to remove the intake air horn and the APPS sensor to get enough access to the cover plate of the VP44. 

 

Using the supplied security TORX bit remove the 5 screws/bolts. Do take notice there is two types of security TORX screws there is the 5 point like what you see in my VP44. There is also the 6 point which some other rebuild have been known to use. Be aware of the type of screw. Now lift the aluminum cover off the pump. Now be careful and make sure the rubber seals are still on the VP44. there is one small rubber seal that came up on my plate stuck. Just make sure to put it back in place. 

 

 

Now place your plate on top and re-install your 5 TORX bolts/screws again. Then start your tapping Alllen screw in the supplied hole. Grab a test light and hook it up to the negative post of the battery and turn your ignition key on. As you tightening the Allen tap screw watch for the test light to come on. Then according to BD Diesel you add another 1/2 turn I cut that down to 1/4 turn.

 

 

Make sure to turn the ignition key OFF before continuing. Now BD Diesel supplies the jam nut for the Allen. Assembly your tap wire with the supplied crimps. Note: Check your crimp on your tuner before installing the blade crimp. Mine was a slightly different style and had to be changed out. Place the Tap wire on the stud now. Carefully thread the nut on the stud and the hold the using a Allen wrench hold the placement of the tap screw while you tighten the nut firmly. Now turn your key on once more and test your tap point. 

 

 

Now reassembly your APPS sensor and intake horn. Hook up your Quadzilla Tap lead and go for test drive. 

 

At this point I was so excited to finally have my Quadzilla tapped into the VP44 again I didn't check my wire tap settings on my tunes. Needless to say as the Quadzilla release to tune mode and I laid on the throttle deep it rolled SERIOUSLY black cloud. Yeap it's working but once I pulled over and adjusted my tunes properly I got it down to just a faint haze. It pulled like a scalded ape now.  I'll upload my tunes here shortly.

 

For the first time in a year I had to turn ON the EGT limit and the boost limit again. I'm loving it... 

 

Edited March 25, 2018 by Mopar1973Man

[notlimah]

Thanks for this Mike. I just got my quad hooked up finally and even on stock sticks it’s running great.

[Mopar1973Man]

17 minutes ago, notlimah said:

Thanks for this Mike. I just got my quad hooked up finally and even on stock sticks it’s running great.

 

With the HX35/40 Hybrid and the +75HP I'm able to light the tires up in 4th gear again. When the wiretap hits the boost snaps to 45 PSI and the tires just break loose.  I got a good scratch going in town launch hard in 2nd it don't take much to break them loose. 

 

I've forgotten what this kind of power is like. It's wonderful once again to be back in the ~400 HP realm again. 

[Dieselfuture]

Where did you get your cover from, I see they are 69 bucks. Dap wants about 5 bucks for shipping and thoroughbred is free shipping, any discount codes at dap that you know off. 

Mine is tapped on the wire with solder but I believe it's a stainless wire not sure how it's been working this whole time, might as well make it right.

[Quadzilla Power]

DAP will ship for free if your order is over $100. If you aren't running a fuel pressure sensor add one of those on then you should get it shipped for free. 

Thoroughbreddiesel.com is a good site too, so is XDP.com, gautoparts.com, puredieselpower.com, and others that carry our products. 

[Mopar1973Man]

2 hours ago, Dieselfuture said:

Where did you get your cover from

 

DAP

 

2 hours ago, Dieselfuture said:

I see they are 69 bucks. Dap wants about 5 bucks

 

2 minutes ago, Quadzilla Power said:

DAP will ship for free if your order is over $100.

 

I managed to spend more than $100 being I order the valve spring compressor and the plate together. 

[notlimah]

What settings did you need to change for the wiretap Mike? I’ve been fooling around with the quad settings a bit all week and not sure what you mean? Also if you were to ever want to ‘untap’ would you just remove the wire and take out the rap screw and be done? Or maybe a shorter screw with some rtv or something to sorta seal it off?

[Mopar1973Man]

11 minutes ago, notlimah said:

What settings did you need to change for the wiretap Mike?

 

Basically the "Pump Tap Parameters".

 

On my Economy tune I'm using the minimum amount fuel stretch at 1,200 microseconds. Then my TPS range is from 50% to 100% so most of my daily driving I can stay mostly on the CANBus as long as possible. Minimum pump tap is at 0% I don't need any leading fuel. Pump low boost is set for 10 PSI so I need 10 PSI of boost to kick in the wiretap. Boost scaling is at 30 PSI.

 

So, in a nutshell, my wiretap only engages with the throttle of 50% or more "AND" boost pressure of 10 PSI or more. This makes for a very stealth rig where I can go light to light and keep my CANBus in use mostly. Then get challenged by another truck, just nail that loud pedal and off to the races we go. This tune is completely smoke free on my truck. Well you might get just a small amount of haze but no black clouds.

 

Now my performance tune is a tad bit smokey. I'm running 1,600 microseconds of fuel stretch. Then my TPS is from 25% to 100%. Minimum pump tap is still 0%. I still don't need any lead in fuel. Pump low boost scaling is still 10 PSI and boost scaling id 30 PSI. The key factor is my timing is about 1* more advanced than Economy and my CANBus fuel is ramped up quicker so I'm hitting 150% but 18 PSI. Now this tune will break the tires loose on dry pavement been known to break the tires loose in 4th gear too on the highway. This tune will produce a black cloud but clears up rather quickly. 

Edited March 29, 2018 by Mopar1973Man

[notlimah]

Ok I see what you mean. I thought that even having pump settings on, it wouldn’t matter if the pump isn’t tapped? 

 

Im debating getting a stealth plate to tap my pump just to have a little fun. You think I’d notice a big jump in performance with just stock injectors and HX?

[Mopar1973Man]

17 minutes ago, notlimah said:

I thought that even having pump settings on, it wouldn’t matter if the pump isn’t tapped? 

No. It doesn't matter. If the wire isn't hooked up the setting are meaningless. I only used level 3.

 

Level 0 = Stock. ECM only, display data only.

Level 1 = Valet Mode

Level 2 = CANBus only to 100%. If any of your tune is above 100% it will limit strictly to 100% max fuel.

Level 3 = CANBus Only. Tunes work as normal.

Level 4 and up are Wire Tap.

 

From Level 4 to 15 is a way of splitting up and controlling wiretap. So like in my tune I'm using 8 Levels. So this gives me 4 levels on wiretap or each level is 25%. Also, remember level start counting from level 0.

 

Level 4 = 25% wiretap

Level 5 = 50% wiretap

Level 6 = 75% wiretap

Level 7 = 100% wiretap

 

23 minutes ago, notlimah said:

Im debating getting a stealth plate to tap my pump just to have a little fun. You think I’d notice a big jump in performance with just stock injectors and HX?

 

Absolutely. My first experience was an Edge Comp on 5x5 and wiretapped with the old Stealth Plate. Wonderful experience and really woke up the truck. 

 

Now with the knowledge @Me78569 brought with Quadzilla and high pop pressure it might be fun to upgrade to 7 x 0.010 injectors popped at 320 bar and tune on CANBus only. Even my current 7 x 0.0085 injectors with Quadzilla is crazy power. That HX35/40 turbo is pushing 45 PSI of boost and ton of power.

 

I'm looking at tweaking timing a bit more on my performance tune to reduce EGT's. 

[Mopar1973Man]

Splitting out this thread...

 

Edited April 4, 2018 by Mopar1973Man